Diestock



Mar. 13,1923. v 1,448,030-

J. J. LEESLEE DIESTOCK Filed-Aug. 15; 1921 INVENTUE AT T EJENEYSPatented 13%, T1923) JAMES J. :tnssrrn, or answer, nnssscnnsn'rrs.

DIESTQCEK.

Application filed August 15, 1921. Serial No. 492,300.

cluding a stock formed to receive and ro-' tate either of a plurality ofinterchangeeble thread-cutting dies about a fixed pipe length, and holdthe thread-cutting means of the die coaxial with the stock, and ebushing located at one side of the stock, and adapted to be supported bya portion of the fixed pipe during the cutting operation, to provide anelongated bearing of the appliance on the'pipe.

The object of the invention ls'toprovide I a one-piece multiple bushingfor an appli' ance. of this character, having a plurality of bores ororifices adapted to cooperate with pipes of different diameters, thebushing being permanently and movably connected with the stock, andadapted to be displaced, to permit the interchangeof dies, and securedwith either of its orifices in axial nlinement with the stock.

The invention is embodied in the improvements which I will now proceedto describe and claim.

Of the accompanying drawings forming a part of this specification.-

Figure 1 is a side elevation of a combined stock end bushing embodyingthe invention.

Figure 2 is a section on line 2-2 of Figure 1. i

Figure 3 is a fragmentary perspective view, showing a portion of thedie-confining holder hereinafter described.

Figure 4 is a. perspective view of the clamping ear which secures theholder in its operative position.

Figure 5 is a side View of the stock body.

Figure 6 is a side view of a screw-cutting die.

Figure 7 is a side view of the die-confining'holder.

Figures 5,6 and 7 are on e much reduced scale.

The same reference characters indicate the same parts in all of thefigures.

The die-stock body shown by Figures 1,

:2 undo, may be of any suitable form end gonstruction, providing a hubportion herning a polygonal socket or cavity12 for the reception of anexternally polygonal stand-- ard (lie 13, said socket enabling the stockto engage and rotate the (lie on a fixed 'pi e length constituting theaxis of the StOGI, and. oppositely projecting socketed arms 14, adaptedto receive the usual elongated hen- (lles whereby the stock body and a.die there in may be manually rotated about a pipe length 15, the latterbeing held by a vise,

and its threaded end beingwithin the cavity 12 at the conclusion of thethread-cutting operation, as shown .by dotted lines in Fig ure 2.

16 represents a die-confining holder dieplnceably connected with thestock-bod ,so that it may be displaced from its operative position topermit the insertion and removai of the die, a different die beingrequired for each size of pipe. The holder 16. 1s preterably provided atone end with an eer 1K,-

pivoted by a screw 18to one end portion of the stock body. and adaptedto beswung edgewise to cover and expose the die cavity.

19 represents a multiplehushing which is rotatable on and displacesblewith the holder 16, and isprovided with a plurality of pipe-receivingorifices 20 of didere'nt diameters, which are offset from the stock andfrom the holder so that the well en orifice receiving apipe 15 is spacedoutwardly from the stock and the die therein, the bushing beingpreferably holiow and provided.

with a rim or flange 19, projecting from its inner side and bearing onthe holder 16, as shown by Figure 2. The holder is provided with anorifice 22 of greater diameter than.{

n with the stock when the holder is in itsop pipe may prothe largestpipe, and arranged to he coaxial erative position, so that the jectthrough the holder. v

The arrangement of the orifices 20 and-of the means rotatebly connectingthe bushing with the holder is such that when the holder is in itsoperative position, either orifice 20 may he loc'sted in axialelinernent with the stock. I prefer to rotetably connect the bushingwith the holder 16, by a stud 2i, fixed to the holder and eccentric to:the axis of the stock, said stud enterin central socket 25 (Figure 2) inthe bus ing. ihe stud is threaded and provlded with a clampingnut.26,-adapted toclamp thebushin'g Ni?) V and in a angles,

' placed with the bushing.

moving the bushing arrangement being such against the holder. Thecenters of the orifices 24) are concentric with the Stud 24, as

indicated by the dotted circle 27 (Figure 1 To releesnbly secure theholder 16 in its operative, position, .1 provide the swinging end ofsaid holder with a notch 28 with which is interlocked an ztngularshoulder 2-5), on e clamping-ear 30. Said car has an o'rificc 31.reccivii'ig a heeded clamping screw 32 engaged with the stock body. Theear 30 has a lip 33 which bears on the outer side of the holder 16 whenthe screw is tighteiu Turning oi the clamping-ear on the sore preventedby ribs on the body.

The bushing; relensobly secured to the holder iii in either ot aplurality of positions, in each or" which or the orifices 2.0 is inaxial rilineinent with the stock. Means to this end is breiereblyembodied in 2. pinrality of salient angles on the perimeter 0": thebushing formed, here shown, by imparting e hexagonal form to saidperimeter, boss formed on the holder it, end having reentrent angled35", adapted to receive either of the ssid salient the lettercorresponding; in number the orifices 220, as shown and position with byFigure. 1.

Before inserting; a ni 13 in the stock cavity 12, the holder 1.6 isreleased end dislhe die is then inserted and the holder is replaced. Thebushing may be or: d to bring either ct its orifices into axial:ilinement With the stock by loosening e clernpin-gnut outward, turningit to enable either of its salient angles to enter the recessed. boss38, and finally tightening he nut 26. The thread-cutting operation maynow be performed as usual.

' I claim:

1. A. threed-cutting appliance comprising, in combination, a. die stockinchidinge. hub portion having a socket adopted to receive and rotate itstandard die on a. pipe length constituting the axis of the stock, meanssecuring the stud to the stock in a position eccentric to the axis ofthe letter,

rotateble on said stud, and provided with a plurality of pipe-receivingorifices of ditl'erent diameters, the that either orifice may be locatedcoaxial with tile stock by a rotary movement of the bushing, and meansfor securing the bushing to the stock in either of a plurality ofoperative positions.

2. A threzidwutting appliance comprising, in combination, at die stockincluding a. hub portion having a socket adapted. to receive end rotateit standard die on a pipe length constituting the axis of the stock, astud, means securing the stud to the stock in a. multiple. bushing astud, 'of the stock, and

relapse position eccentric to the axis of the letter, a multiple bushingrotatable on said stud, and provided with a plurality of pipe-receivingorifices of dii'lerent diameters, the arrangement being such that eitherorifice may be lo *eted coaxial with the. stock;v by 8. rotary movementof the bushing, and means for securing the bushing to the stock ineither of e plurality of operative positions, means being provided forpermitting the displacement of the said stud with the hushing to permitthe insertion end reinovai of a die.

3. A. thread-cutting appliance ecn'iprising, in cornhin: die stockincluding a. body dept-ed to receive and rotate a threedcut 'ng die,and, a holder pivoted to the body In: adapted to confine die therein,the olr r being displeceeble from its operative on an axis eccentric thesins of the stock,

and provided with c. plurality of orifices of diiierent diameters, thearrangement being such that either orifice may be located. coaxial withthe axis of the stock by e rotary movement of the bushing, and roe-ensfor seouring t bushing to the holder in either of eplurslity ofoperative positions.

A threa -cutting appliance substantielly as specified by claim 3, thesaid holder being adopted to edgewise from one end to and from itsoperative position, and provided with a stud eccentric to the axis or"the stock, the steel; body end the swingend being movid-ed. with meansfor re leesebly contining thc holder in operative position, and thebushing being rotatable on said stud.

A thread-cutting appliance tiully as specified by claim SIIbStELI1- heso 1d holder stud eccentric to the axis with e notch in its swing:- mgend, the sztid applizince including}; also a clamping ear having angularshoulder adapted to engage said notch, and a clamp ing-screw connectingsaid ear with the stock body, the bushing being rotatable on said stgud.

6. A thread-cuttin appliance substantially as specified by c eiin 3, thebushing being provided with e'plurolity of salient angles, and means forsecuring the bushing to the holder, including a recessed boss on theholder adapted to engage either of said angles and e clumping-nut onsaid stud.

in testimony whereof l hove e-iiixod my signetur provided with 2.

JAMES J. LESSLHE.

